Question

几道英语语法题（有加分）

1.Scientists estimate that plants and animals lived ___ 3.5 billion years ago.
A.as far as B.as many as C.as long as D.as old as
这道题为何不选A而选C？C不是「只要」的意思吗？

2.In the past two years,the number of campus bookstores offering rentals ___ from a few dozen to 1500.
A.jumped B.had jumped C.is jumping D.has jumped
为何选D？不选B？

3.Seed plants - plants ___ from seeds - need water,sunlight and mineral to grow vigorously.
A.grown B.to grow C.to be grown D.having grown
为何选A不选B？

4.The Community Representative is a position designed for people with a strong desire to do something rewarding and ___ some money.
A.earned B.to earning C.earning D.earn
为何选D不选C？

Answer 1

1、as long as 还有长达。。。的意思
2、过去完成时表示过去发生过去完成且对现在无影响，现在完成时表示过去发生现在完成对现在有影响的，这道题说两年来。。。，说明满足后者。
3、grow有种植，使生长的意思，这里是说植物是被（人）种植的，所以用了被动做同位语。
4、这里的earn是和do并列的，不是和rewarding。
辛苦码字不容易，望采纳。